Quote Originally Posted by Dougal View Post
I actually lost a bolt in one of mine. Not because of clearance but because I didn't torque it up properly. I put a torque wrench on it, tightened them evenly and it gave no more problems.

The early bolts are imperial, later are metric.

Next time you're in a steel framed building, think that every bolt that holds it together has at least 2mm clearance.
But it sounds like Skiboy did it properly and still had problems, which is why I'm curious. And buildings don't usually have the same sudden loadings and have more than two bolts holding them together anyway!